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Comment by cheunste | Hacker News Reader

I been pondering about this solution for months since my air purifier died back early summer. I also have an additional idea to make it more automatic by using a raspberry pi, hooking it up to a powerswitch tail (essentially cutting power to a fan) and have it automatically turn on and off depending on time of day, etc.

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Maybe you could even use it in conjunction with something like a laser particulate sensor, to scope how effective it is and track its progress from day to day. Kick it on when it detects a nasty bunch of filth in the air, and kill it once it reaches a set acceptable level.

https://hackaday.com/2018/10/09/hacking-the-zh03b-laser-part...

This one only goes down to one micron though, so it might not be usable for many allergens.

Skip the pi, just grab an outlet timer from the hardware store for a couple bucks.

I have mine on a homekit enabled outlet ($20) for scheduling and presence-based triggers. Unfortunately I haven't found a homekit enabled air quality sensor to pair with it.

Eve room? https://www.evehome.com/en/eve-room

Thanks! Last I checked they were no longer selling version 1 of this product and hadn't released version 2 yet. This might fit the bill.

This looks great but is exclusive to Apple products (requires an iOS device)!

There’s Netatmo Home Coach.

Maybe you could have the input being a air quality sensor or scrape air quality from local government site / sensorup site.

instead of a raspberry pi and all that entails, might I suggest a simple outlet timer

Good time of year to buy them, too, what with the christmas lights and all that. $5 ballpark.

I have seen the mechanical style ones at the dollar store. I wouldn't set my watch by it, but would be fine for this purpose.

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